Yayuk, E. , Iswatiningsih, D. and Ismail, .A.D. 2026. Enhancing Mathematical Motivation, Problem-Solving, and Cognitive Engagement of Pre-Service Teachers: A Metaverse-Based Adaptive Gamification Research and Development Study. International Journal of Learning, Teaching and Educational Research. 25, 3 (Mar. 2026), 162–193.